REVIEW OF RF PATENTS FOR REFRACTORY INVENTIONS
Review prepared by the editorial staff of Novye Ogneupory
Translated from Novye Ogneupory, No. 1, p. 58, January, 2010.
METHOD FOR PREPARING CHARGES
FOR OBJECTS MADE OF ZIRCONIUM DIBORIDE
A. I. Solov’ev, S. P. Andriets, N. V. Dedov, A. M. Selikhovkin,
I. A. Stepanov, and A. V. Tsyngalov
RU Patent 2344106
MPK C04B35/58, C01B35/04
Method for preparing charges for objects from boron car
bide obtained by breaking down zirconium diboride contain-
ing admixtures and activated compaction of objects is distin-
guished by the fact that the qualitative composition of addi-
tions is selected from admixtures, and in fact of ZrO
(or) ZrC, and (or) B
C, and its quantitative composition is
calculated from additions for providing stoichiometry of the
zirconium diboride obtained from admixtures and additions.
As a result of this high quality highly dense objects not con-
taminated with impurities are prepared.
Inventions Bulletin: Utility Models,
No. 2, 685 – 686 (2009).
Yu. A. Shchepochkina
RU Patent 2345040
A refractory mix containing chromium magnesite, boric
acid and quartzite, distinguished by the fact that it addition
ally contains zircon, alumina, and fluorophlogopite with the
following ratios of components, wt.%: chromium magnesite
25.0 – 35.0, boric acid 3.0 – 5.0, zircon 8.0 – 12.0, alumina
8.0 – 12.0, fluorophlogopite 3.0 – 5.0, quartzite balance. The
mix may be used for lining melting furnaces, and mold prep
aration for casting nonferrous metals predominantly.
Bulletin, No. 3, 1189 (2009).
HEAT-RESISTANT HIGHLY POROUS
FIBROUS HEAT INSULATION AND SOUND
ABSORBING MATERIAL AND ITS METHOD
G. R. Arutyunyan, V. S. Volkov, G. C. Shul’, Yu. M. Sofeichuk,
O. V. Tomchani, A. F. Sobolev, and R. D. Filippova
RU Patent 2345042
MPK C04B35/82, B28B21/26
1. Heat-resistant highly porous fibrous heat insulation
and sound absorbing material, manufactured from a mineral
filler in the form of SiO
fibers, a binder, sintering addition,
for which amorphous boron or boron nitride is used, and a
surfactant (SAS), is distinguished by the fact that the quality
of the SiO
fibers used is a silica fiber 4 – 10 mm in diame-
ter, and the binder and SAS used simultaneously is an aque-
ous solution of one substance selected from a group including
methyl cellulose, carboxymethyl cellulose, or carboxymethyl
starch, whose content is 2 – 5%. Additionally the material
contains silica gel with the following ratio of components,
wt.%: silica fiber 75.0 – 93.0, amorphous boron or boron
nitride 0.2 – 0.5, silica gel 7.0 – 25.0.
2. The material preparation method includes grinding of
fibers in water; partial removal of water from the sus
pension obtained by means of a vacuum with formation of a
raw fiber block; mixing of the raw fiber block in water; for
mation of an aqueous emulsion, containing binder, amor
phous boron or boron nitride and SAS; mixing of the raw fi
ber block with the water emulsion obtained; molding the sus
pension obtained of raw material preform by removing ex
cess water by means of a vacuum and compaction to the re
quired height in the mold; drying of the raw preform with a
gradual increase in temperature to 300°C and high-tempera
ture firing of the material preform obtained.
3. The method is distinguished by the fact that as SiO
fibers the silica fiber used has a diameter of 4 – 10 mm, that
before grinding is subjected to heat treatment at 800°C for
not more than 1.5 h, and the binder and surfactant used are an
Refractories and Industrial Ceramics Vol. 51, No. 1, 2010
1083-4877/10/5101-0056 © 2010 Springer Science+Business Media, Inc.
OOO Intermet Inzhiniring, Moscow, Russia.
Subsequently we use the abbreviated name Bulletin.